PHP练习项目笔记之COOKIES,php练习cookies
主要是在登录和退出的时候,设置cookies。来保存登录和安全退出
1:在登录页面设置
//设置cookies的值
_setcookies($_rows['tg_username'], $_rows['tg_uniqid'],$_clean['time']);
_location(null,'index.php');
第二步:生成cookie,
<span>/*</span><span>* * _setcookies * @param unknown $_username * @param unknown $_uniqid </span><span>*/</span> <span>function</span> _setcookies(<span>$_username</span>,<span>$_uniqid</span>,<span>$_time</span><span>){ </span><span>setcookie</span>('username',<span>$_username</span><span>); </span><span>setcookie</span>('uniqid',<span>$_uniqid</span><span>); </span><span>switch</span> (<span>$_time</span><span>) { </span><span>case</span> '0' : <span>//</span><span> 设置浏览器进程</span> <span>setcookie</span> ( 'username', <span>$_username</span><span> ); </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span><span> ); </span><span>break</span><span>; </span><span>case</span> '1' : <span>//</span><span> 一天的进程</span> <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 86400<span> ); </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 86400<span> ); </span><span>break</span><span>; </span><span>case</span> '2' : <span>//</span><span> 一周的进程</span> <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 604800<span> ); </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 604800<span> ); </span><span>break</span><span>; </span><span>case</span> '0' : <span>//</span><span> 一个月的进程</span> <span>setcookie</span> ( 'username', <span>$_username</span>, <span>$_time</span> () + 2592000<span> ); </span><span>setcookie</span> ( 'uniqid', <span>$_uniqid</span>, <span>$_time</span> () + 2592000<span> ); </span><span>break</span><span>; } }</span>
第三步:登录状态中设置
<span>//</span><span>登录的情况,就是防止登陆后通过在浏览器中直接连接再次登录</span> <span>function</span><span> _login_state(){ </span><span>if</span> (!<span>isset</span>(<span>$_COOKIE</span>['username'<span>])) { _alert_back(</span>"登录状态无法就行本操作!"<span>); } }</span>
<span>//</span><span>删除cookies</span> <span>function</span><span> _unsetcookies(){ </span><span>setcookie</span>('username','',<span>time</span>()-1<span>); </span><span>setcookie</span>('uniqid','',<span>time</span>()-1<span>); _session_destroy();</span><span>//</span><span>删除session</span> _location(<span>null</span>,'index.php'); <span>//</span><span>做跳转</span> }
第四步在登录页面和退出页面加上
<span>//</span><span>登录状态</span> _login_state();
显示数据的二个方法:在数据配置文件中配置,我的是mysql.func.php
<span>/*</span><span>* * _fetch_array 只能获取一条数据组 * @param $_sql </span><span>*/</span> <span>function</span> _fetch_array(<span>$_sql</span><span>) { </span><span>return</span> <span>mysql_fetch_array</span>(_query(<span>$_sql</span>),<span>MYSQL_ASSOC); } </span><span>/*</span><span>* * _fetch_array_list可以返回指定数据集的所有数据 * @param unknown $_result * @return multitype: </span><span>*/</span> <span>function</span> _fetch_array_list(<span>$_result</span><span>){ </span><span>return</span> <span>mysql_fetch_array</span>(<span>$_result</span>,<span>MYSQL_ASSOC); }</span>
最后在页面中赋值
<span>//</span><span>从数据库里提取数据获取结果集 //我们必须每次重新读取结果集,而不是从新去执行SQL语句。</span> <span>$_result</span> = _query("SELECT tg_username,tg_sex,tg_face FROM tg_user ORDER BY tg_reg_time DESC"<span>); </span><?php <span>while</span> (!!<span>$_rows</span> = _fetch_array_list(<span>$_result</span>)) {?> <<span>dl</span>> <dd <span>class</span>="user"><?php <span>echo</span> <span>$_rows</span>['tg_username']?><?php <span>echo</span> <span>$_rows</span>['tg_sex']?></dd> <dt><img src="<?php echo <span alt="PHP练习项目笔记之COOKIES,php练习cookies" >$_rows</span>['tg_face']?>" alt="" /></dt>
陳述
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